Github user jerryshao commented on the pull request:
https://github.com/apache/spark/pull/557#issuecomment-41636650
Hi TD, the exception (method not found in ZkClient) is introduced by
zkclient-0.1.jar. Actually Kafka 0.8 relies on zkclient-0.3.jar which will be
automatically imported by Kafka. So by removing the dependency line in build
profile: `"com.github.sgroschupf" % "zkclient" % "0.1"
excludeAll(excludeNetty),` can remove this exception.
As tests seems to fail unpredictably, it also confuses me a lot, I'm not
sure it's the problem of producer do not produce any data, or the problem of
receiver do not receive any data. I will trace it to see the details if I can.
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